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Table 3 Predictors of mortality and discharge with an acute cardiac diagnosis in all chest pain patients

From: Chest pain in the ambulance; prevalence, causes and outcome - a retrospective cohort study

   30-day mortality Acute cardiac diagnosis during index admission
Totala Risk Ratio (95% CI) P-value Deaths, n(%) Risk Ratio (95% CI) P-value Acute cardiac diagnoses, n(%)
Total 7635    160 (2%)    1140 (15%)
Gender
 Female 3485 1.0 (ref.)   74 (2%) 1.0 (ref.)   375 (11%)
 Male 4150 1.06 (0.78;1.44) 0.721 86 (2%) 1.77 (1.58;1.99) < 0.001 765 (18%)
Age-group
  < 30 344 1.0 (ref.)   2 (1%) 1.0 (ref.)   6 (2%)
 30–49 1344 0.12 (0.01;1.37) 0.089 1 (%) 4.71 (2.09;10.62) < 0.001 109 (8%)
 50–59 1373 0.24 (0.03;1.68) 0.149 2 (%) 9.05 (4.05;20.21) < 0.001 208 (15%)
 60–69 1691 1.94 (0.46;8.23) 0.369 22 (1%) 11.77 (5.29;26.18) < 0.001 326 (19%)
  > =70 2883 6.33 (1.56;25.61) 0.010 133 (5%) 11.39 (5.13;25.32) < 0.001 491 (17%)
Acute Myocardial Infarction (AMI)
 No prior AMI 6785 1.0 (ref.)   132 (2%) 1.0 (ref.)   1005 (15%)
 Prior AMI 850 0.96 (0.63;1.46) 0.835 28 (3%) 0.96 (0.81;1.14) 0.677 135 (16%)
Diabetes (DM)
 No DM 6812 1.0 (ref.)   131 (2%) 1.0 (ref.)   1013 (15%)
 DM 823 1.11 (0.74;1.66) 0.618 29 (4%) 0.97 (0.82;1.15) 0.758 127 (15%)
Congestive heart disease (CHD)
 No CHD 7003 1.0 (ref.)   128 (2%) 1.0 (ref.)   1065 (15%)
 CHD 632 1.33 (0.88;2.02) 0.178 32 (5%) 0.69 (0.55;0.87) 0.002 75 (12%)
Chronic pulmonary disease (CPD)
 No CPD 6757 1.0 (ref.)   114 (2%) 1.0 (ref.)   1053 (16%)
 CPD 878 1.9 (1.35;2.68) < 0.001 46 (5%) 0.59 (0.48;0.72) < 0.001 87 (10%)
Renal disease (RD)
 No or mild RD 7325 1.0 (ref.)   139 (2%) 1.0 (ref.)   1097 (15%)
 Moderate to severe RD 310 1.7 (1.06;2.71) 0.027 21 (7%) 0.9 (0.68;1.2) 0.466 43 (14%)
  1. aIndividual patients, including only first transport in study period